RPM872
Photo Link Module
Rev.B 6/6
zNotes
1) VLEDA(8pin), VCC(3pin) and VIO(2pin)
•
Other power source can be used difference between VLEDA and VCC and VIO. (VIO < VCC +0.3V)
2) Caution in designing board lay-out
To get maximum potential from RPM872, please keep in mind following instruction.
•
The line of RXD (6pin) should be connected at backside via through hole close to RPM872 pin lead. Better not
to be close to photo diode side (1pin).
⇒This is to minimize feedback supplied to photo diode from RXD.
•
As for C1 between 3-4 pin should be placed close to RPM872.
•
Better to be placed more than 1.0cm in radius from photo diode (pin1 side) and also away from the parts which
generates noise, such as DC / DC converter.
3) Others
•
Please be sure to set up the TXD (7pin) input to be “L” (under 0.3V) except transmitting data
(for < 90µs. On duty < 20%).
•
Powerdown current might increase if exposed by strong light (ex. direct sunlight) at powerdown mode.
•
Please use by the signal format which is specified by IrDA Ver1.2 (Low Power). There might be on error if used by
different signal format.
•
Dust or dirt on lens portion may affect the characteristics, so pay sufficient attention.
4) Eye Safe
•
IEC825-1 (EN60825-1) Class 1 Eye Safe.
zExternal dimensions (Unit : mm)
RSLP8
R1.0
R1.1
0.78 0.76
0.37
±0.10
0.95
3.8
1
1
8
LEDPin PD
2
1
2.72
0.8
7.6
5.6
P0.95 × 7=6.65
2.49
